This fill adapter set is designed for use with external large commercial CO₂ tanks, such as 5 lb, 20 lb, and 50 lb cylinders, enabling users to refill compatible quick-disconnect CO₂ cylinders at home. Style: W21.8 / CGA320 Color: As shown Material: Metal How to Use: 1. Gather required items: wrench, charging connector, large CO₂ tank, and empty quick-connect cylinder. 2. Loosen the exhaust screw, then use the wrench to attach the charging connector to the large CO₂ tank. 3. Rotate and position the empty cylinder into the filling station. 4. Tighten the exhaust valve to securely lock the cylinder in place. 5. Slowly open the valve on the large CO₂ tank to begin refilling. Refill for approximately 15–20 seconds until the cylinder is full. 6. Close the large CO₂ tank valve first, then release residual pressure by loosening the exhaust valve before removing the filled cylinder. Note: Slight variations in appearance or printed text may occur between production batches; these do not affect functionality. Package Includes: 1 × CO₂ Cylinder Refill Fill Station Adapter Other items shown are not included. Note: Color representation may vary slightly due to lighting conditions and screen settings. Measurement tolerance: ±1–3 cm.